726815516 has 48 divisors (see below), whose sum is σ = 1507645440. Its totient is φ = 299974080.

The previous prime is 726815503. The next prime is 726815519. The reversal of 726815516 is 615518627.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726815519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397781 + ... + 399603.

It is an arithmetic number, because the mean of its divisors is an integer number (31409280).

Almost surely, 2^726815516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 726815516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (753822720).

726815516 is an abundant number, since it is smaller than the sum of its proper divisors (780829924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

726815516 is a wasteful number, since it uses less digits than its factorization.

726815516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2354 (or 2352 counting only the distinct ones).

The product of its digits is 100800, while the sum is 41.

The square root of 726815516 is about 26959.5162419506. The cubic root of 726815516 is about 899.1001359627.

The spelling of 726815516 in words is "seven hundred twenty-six million, eight hundred fifteen thousand, five hundred sixteen".